In networking, data rate refers to the data bits transmitted across the network in a specified time frame. The data rate is measured in bits per second (bps). Generally, a higher data rate tends to better video quality, especially with high-speed motion scenes. For content such as movies you would not be able to get the difference between a data rate of 12 Mbps and 19 Mbps. However, for content such as a live telecast of programs, you probably would see a difference between the data rates. The highest data transfer rate till date is 14 terabits per second over a single fiber optic.
Nowadays, cable lengths of 100 meters support data rates up to 10 Gbps. As the requirements for faster data rates occur, the complexity of the cable design increases. However, there are some factors that can affect high-speed data transfer, such as frequency and bandwidth.